Fix Android tab navigation "stretch" regression.

content/browser/web_contents/web_contents_android.cc

 // Copyright 2013 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.
 
 #include "content/browser/web_contents/web_contents_android.h"
 
 #include <stdint.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 628 matching lines @@
   WebContentsViewAndroid* view =
       static_cast<WebContentsViewAndroid*>(web_contents_->GetView());
   view->SetOverscrollRefreshHandler(
       base::MakeUnique<ui::OverscrollRefreshHandler>(
           overscroll_refresh_handler));
 }
 
 void WebContentsAndroid::GetContentBitmap(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj,
-    const JavaParamRef<jobject>& jcallback,
-    const JavaParamRef<jobject>& color_type,
-    jfloat scale,
-    jfloat x,
-    jfloat y,
-    jfloat width,
-    jfloat height) {
+    jint width,
+    jint height,
+    const JavaParamRef<jobject>& jcallback) {
   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   const ReadbackRequestCallback result_callback = base::Bind(
       &WebContentsAndroid::OnFinishGetContentBitmap, weak_factory_.GetWeakPtr(),
       ScopedJavaGlobalRef<jobject>(env, obj),
       ScopedJavaGlobalRef<jobject>(env, jcallback));
-  SkColorType pref_color_type = gfx::ConvertToSkiaColorType(color_type);
-  if (!view || pref_color_type == kUnknown_SkColorType) {
+  if (!view) {
     result_callback.Run(SkBitmap(), READBACK_FAILED);
     return;
   }
-  if (!view->IsSurfaceAvailableForCopy()) {
-    result_callback.Run(SkBitmap(), READBACK_SURFACE_UNAVAILABLE);
-    return;
-  }
-  view->GetScaledContentBitmap(scale,
-                               pref_color_type,
-                               gfx::Rect(x, y, width, height),
-                               result_callback);
+  view->CopyFromSurface(gfx::Rect(), gfx::Size(width, height), result_callback,
+                        kN32_SkColorType);
 }
 
 void WebContentsAndroid::ReloadLoFiImages(JNIEnv* env,
                                           const JavaParamRef<jobject>& obj) {
   static_cast<WebContentsImpl*>(web_contents_)->ReloadLoFiImages();
 }
 
 int WebContentsAndroid::DownloadImage(
     JNIEnv* env,
     const base::android::JavaParamRef<jobject>& obj,
@@ skipping 76 matching lines @@
       env, obj, callback, id, http_status_code, jurl, jbitmaps, jsizes);
 }
 
 void WebContentsAndroid::SetMediaSession(
     const ScopedJavaLocalRef<jobject>& j_media_session) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_WebContentsImpl_setMediaSession(env, obj_, j_media_session);
 }
 
 }  // namespace content