Upstream the clipboard implementation for Android

ui/base/clipboard/clipboard.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_BASE_CLIPBOARD_CLIPBOARD_H_
 #define UI_BASE_CLIPBOARD_CLIPBOARD_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
 #include "ui/base/ui_export.h"
 
 #if defined(TOOLKIT_USES_GTK)
 #include <gdk/gdk.h>
 #endif
 
+#if defined(OS_ANDROID)
+#include <jni.h>
+
+#include "base/android/jni_android.h"
+#include "base/android/scoped_java_ref.h"
+#endif
+
 namespace gfx {
 class Size;
 }
 
 class FilePath;
 class SkBitmap;
 
 #if defined(TOOLKIT_USES_GTK)
 typedef struct _GtkClipboard GtkClipboard;
 #endif
@@ skipping 35 matching lines @@
     NSString* data_;
 #elif defined(USE_AURA)
     explicit FormatType(const std::string& native_format);
     const std::string& ToString() const { return data_; }
     std::string data_;
 #elif defined(TOOLKIT_USES_GTK)
     explicit FormatType(const std::string& native_format);
     explicit FormatType(const GdkAtom& native_format);
     const GdkAtom& ToGdkAtom() const { return data_; }
     GdkAtom data_;
+#elif defined(OS_ANDROID)
+    explicit FormatType(const std::string& native_format);
+    const std::string& ToString() const { return data_; }
+    int compare(const std::string& str) const { return data_.compare(str); }
+    std::string data_;
 #else
 #error No FormatType definition.
 #endif
   };
 
   // ObjectType designates the type of data to be stored in the clipboard. This
   // designation is shared across all OSes. The system-specific designation
   // is defined by FormatType. A single ObjectType might be represented by
   // several system-specific FormatTypes. For example, on Linux the CBF_TEXT
   // ObjectType maps to "text/plain", "STRING", and several other formats. On
@@ skipping 70 matching lines @@
   ~Clipboard();
 
   // Write a bunch of objects to the system clipboard. Copies are made of the
   // contents of |objects|. On Windows they are copied to the system clipboard.
   // On linux they are copied into a structure owned by the Clipboard object and
   // kept until the system clipboard is set again.
   void WriteObjects(const ObjectMap& objects);
 
   // On Linux/BSD, we need to know when the clipboard is set to a URL.  Most
   // platforms don't care.
-#if defined(OS_WIN) || defined(OS_MACOSX) || defined(USE_AURA)
+#if defined(OS_WIN) || defined(OS_MACOSX) || defined(USE_AURA) \
+    || defined(OS_ANDROID)
   void DidWriteURL(const std::string& utf8_text) {}
 #else  // !defined(OS_WIN) && !defined(OS_MACOSX)
   void DidWriteURL(const std::string& utf8_text);
 #endif
 
   // Returns a sequence number which uniquely identifies clipboard state.
   // This can be used to version the data on the clipboard and determine
   // whether it has changed.
   uint64 GetSequenceNumber(Buffer buffer);
 
@@ skipping 135 matching lines @@
   void SetGtkClipboard();
   // Insert a mapping into clipboard_data_.
   void InsertMapping(const char* key, char* data, size_t data_len);
 
   // Find the gtk clipboard for the passed buffer enum.
   GtkClipboard* LookupBackingClipboard(Buffer clipboard) const;
 
   TargetMap* clipboard_data_;
   GtkClipboard* clipboard_;
   GtkClipboard* primary_selection_;
+#elif defined(OS_ANDROID)
+  // Returns whether some text is available from the Android Clipboard.
+  bool IsTextAvailableFromAndroid() const;
+
+  // Make sure that the Android Clipboard contents matches what we think it
+  // should contain. If it changed, a copy occured from another application and
+  // all internal data is dropped.
+  void ValidateInternalClipboard() const;
+
+  // Clear the Clipboard for all types. Both for Android and internal.
+  void Clear();
+
+  // Clear the internal clipboard.
+  void ClearInternalClipboard() const;
+
+  // This private method is used to set non text key/value.
+  void Set(const std::string& key, const std::string& value);
+
+  // Java class and methods for the Android ClipboardManager.
+  base::android::ScopedJavaGlobalRef<jobject> clipboard_manager_;
+  jmethodID set_text_;
+  jmethodID has_text_;
+  jmethodID get_text_;
+  jmethodID to_string_;
 #endif
 
   // MIME type constants.
   static const char kMimeTypeText[];
   static const char kMimeTypeHTML[];
   static const char kMimeTypePNG[];
 
   DISALLOW_COPY_AND_ASSIGN(Clipboard);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_CLIPBOARD_CLIPBOARD_H_