Update touch selection to only modify one selection point at a time.

content/browser/renderer_host/render_widget_host_view_android.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/build_info.h"
 #include "base/basictypes.h"
@@ skipping 1122 matching lines @@
 void RenderWidgetHostViewAndroid::SetNeedsAnimate() {
   DCHECK(content_view_core_);
   DCHECK(!using_synchronous_compositor_);
   content_view_core_->GetWindowAndroid()->SetNeedsAnimate();
 }
 
 void RenderWidgetHostViewAndroid::MoveCaret(const gfx::PointF& position) {
   MoveCaret(gfx::Point(position.x(), position.y()));
 }
 
+void RenderWidgetHostViewAndroid::MoveRangeSelectionExtent(
+    const gfx::PointF& extent) {
+  DCHECK(content_view_core_);
+  content_view_core_->MoveRangeSelectionExtent(extent);

[no sievers, 2014/11/04 22:12:10]

It seems a bit odd that we are going back from RWHV to CVC/WebContents here for
a browser-side initiated action, but was like that before your change.

+}
+
 void RenderWidgetHostViewAndroid::SelectBetweenCoordinates(
-    const gfx::PointF& start,
-    const gfx::PointF& end) {
+    const gfx::PointF& base,
+    const gfx::PointF& extent) {
   DCHECK(content_view_core_);
-  content_view_core_->SelectBetweenCoordinates(start, end);
+  content_view_core_->SelectBetweenCoordinates(base, extent);
 }
 
 void RenderWidgetHostViewAndroid::OnSelectionEvent(
     SelectionEventType event,
     const gfx::PointF& position) {
   DCHECK(content_view_core_);
   content_view_core_->OnSelectionEvent(event, position);
 }
 
 scoped_ptr<TouchHandleDrawable> RenderWidgetHostViewAndroid::CreateDrawable() {
@@ skipping 614 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content