[android_webview] Fixes for wrap_content layouts.

android_webview/common/render_view_messages.h

Index: android_webview/common/render_view_messages.h
diff --git a/android_webview/common/render_view_messages.h b/android_webview/common/render_view_messages.h
index 96d17589c7120f1176e8afd0f41ab398f9ef2e62..b53bcfac9fda0934eca9fd9bf86ba4c3b65cc3d7 100644
--- a/android_webview/common/render_view_messages.h
+++ b/android_webview/common/render_view_messages.h
@@ -67,6 +67,11 @@ IPC_MESSAGE_ROUTED0(AwViewMsg_ResetScrollAndScaleState)
 IPC_MESSAGE_ROUTED1(AwViewMsg_SetInitialPageScale,
                     double /* page_scale_factor */)
 
+// Makes the WebKit::WebView use the given size for layout regardless of what
+// the size of the RenderWidget or viewport settings are.
+IPC_MESSAGE_ROUTED1(AwViewMsg_SetFixedLayoutSize,
+                    gfx::Size /* size */)
+
 // Sets the base background color for this view.
 IPC_MESSAGE_ROUTED1(AwViewMsg_SetBackgroundColor,
                     SkColor);