Remove certain context menu items for images.

chrome/android/java/src/org/chromium/chrome/browser/tab/TabContextMenuItemDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tab/TabContextMenuItemDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tab/TabContextMenuItemDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/tab/TabContextMenuItemDelegate.java
index d9e083f96375223e8fcade2b53694bf54117276e..c0ed65ec5f55e4558e66225efd082347b5cd8698 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tab/TabContextMenuItemDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tab/TabContextMenuItemDelegate.java
@@ -4,8 +4,6 @@
 
 package org.chromium.chrome.browser.tab;
 
-import android.text.TextUtils;
-
 import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.contextmenu.ContextMenuItemDelegate;
@@ -23,55 +21,17 @@ import java.util.Locale;
  * A default {@link ContextMenuItemDelegate} that supports the context menu functionality in Tab.
  */
 public class TabContextMenuItemDelegate implements ContextMenuItemDelegate {
-    public static final String PAGESPEED_PASSTHROUGH_HEADERS =
-            "Chrome-Proxy: pass-through\nCache-Control: no-cache";
-
     private final Clipboard mClipboard;
     private final Tab mTab;
     private final ChromeActivity mActivity;
 
     /**
-     * The data reduction proxy was in use on the last page load if true.
-     */
-    protected boolean mUsedSpdyProxy;
-
-    /**
-     * The data reduction proxy was in pass through mode on the last page load if true.
-     */
-    protected boolean mUsedSpdyProxyWithPassthrough;
-
-    /**
-     * The last page load had request headers indicating that the data reduction proxy should
-     * be put in pass through mode, if true.
-     */
-    protected boolean mLastPageLoadHasSpdyProxyPassthroughHeaders;
-
-    /**
      * Builds a {@link TabContextMenuItemDelegate} instance.
      */
     public TabContextMenuItemDelegate(Tab tab, ChromeActivity activity) {
         mTab = tab;
         mActivity = activity;
         mClipboard = new Clipboard(mTab.getApplicationContext());
-        mTab.addObserver(new EmptyTabObserver() {
-            @Override
-            public void onLoadUrl(Tab tab, LoadUrlParams params, int loadType) {
-                super.onLoadUrl(tab, params, loadType);
-                // The data reduction proxy can only be set to pass through mode via loading an
-                // image in a new tab. We squirrel away whether pass through mode was set, and check
-                // it in: @see TabWebContentsDelegateAndroid#onLoadStopped()
-                mLastPageLoadHasSpdyProxyPassthroughHeaders = false;
-                if (TextUtils.equals(params.getVerbatimHeaders(), PAGESPEED_PASSTHROUGH_HEADERS)) {
-                    mLastPageLoadHasSpdyProxyPassthroughHeaders = true;
-                }
-            }
-
-            @Override
-            public void onPageLoadFinished(Tab tab) {
-                super.onPageLoadFinished(tab);
-                maybeSetDataReductionProxyUsed();
-            }
-        });
     }
 
     @Override
@@ -85,11 +45,6 @@ public class TabContextMenuItemDelegate implements ContextMenuItemDelegate {
     }
 
     @Override
-    public boolean canLoadOriginalImage() {
-        return mUsedSpdyProxy && !mUsedSpdyProxyWithPassthrough;
-    }
-
-    @Override
     public boolean isDataReductionProxyEnabledForURL(String url) {
         return isSpdyProxyEnabledForUrl(url);
     }
@@ -105,11 +60,6 @@ public class TabContextMenuItemDelegate implements ContextMenuItemDelegate {
     }
 
     @Override
-    public void onSaveImageToClipboard(String url) {
-        mClipboard.setHTMLText("<img src=\"" + url + "\">", url, url);
-    }
-
-    @Override
     public void onOpenInNewTab(String url, Referrer referrer) {
         RecordUserAction.record("MobileNewTabOpened");
         LoadUrlParams loadUrlParams = new LoadUrlParams(url);
@@ -148,22 +98,12 @@ public class TabContextMenuItemDelegate implements ContextMenuItemDelegate {
         mTab.loadUrl(loadUrlParams);
     }
 
-    @Override
-    public void onOpenImageInNewTab(String url, Referrer referrer) {
-        boolean useOriginal = isSpdyProxyEnabledForUrl(url);
-        LoadUrlParams loadUrlParams = new LoadUrlParams(url);
-        loadUrlParams.setVerbatimHeaders(useOriginal ? PAGESPEED_PASSTHROUGH_HEADERS : null);
-        loadUrlParams.setReferrer(referrer);
-        mActivity.getTabModelSelector().openNewTab(loadUrlParams,
-                TabLaunchType.FROM_LONGPRESS_BACKGROUND, mTab, isIncognito());
-    }
-
     /**
      * Checks if spdy proxy is enabled for input url.
      * @param url Input url to check for spdy setting.
      * @return true if url is enabled for spdy proxy.
     */
-    boolean isSpdyProxyEnabledForUrl(String url) {
+    private boolean isSpdyProxyEnabledForUrl(String url) {
         if (DataReductionProxySettings.getInstance().isDataReductionProxyEnabled()
                 && url != null && !url.toLowerCase(Locale.US).startsWith("https://")
                 && !isIncognito()) {
@@ -171,25 +111,4 @@ public class TabContextMenuItemDelegate implements ContextMenuItemDelegate {
         }
         return false;
     }
-
-    /**
-     * Remember if the last load used the data reduction proxy, and if so,
-     * also remember if it used pass through mode.
-     */
-    private void maybeSetDataReductionProxyUsed() {
-        // Ignore internal URLs.
-        String url = mTab.getUrl();
-        if (url != null && url.toLowerCase(Locale.US).startsWith("chrome://")) {
-            return;
-        }
-        mUsedSpdyProxy = false;
-        mUsedSpdyProxyWithPassthrough = false;
-        if (isSpdyProxyEnabledForUrl(url)) {
-            mUsedSpdyProxy = true;
-            if (mLastPageLoadHasSpdyProxyPassthroughHeaders) {
-                mLastPageLoadHasSpdyProxyPassthroughHeaders = false;
-                mUsedSpdyProxyWithPassthrough = true;
-            }
-        }
-    }
 }