Allow zoom-in as alternative to popup when tapping multiple targets.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 7f2efd89b77b28957981ce8b302dd153136f6b1f..b332b7fdfe209193153a47c5860e3a6078bfeb50 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -6220,37 +6220,45 @@ bool RenderViewImpl::didTapMultipleTargets(
   if (!new_total_scale)
     return false;
 
-  gfx::Size canvas_size = gfx::ToCeiledSize(gfx::ScaleSize(zoom_rect.size(),
-                                                           new_total_scale));
-  TransportDIB* transport_dib = NULL;
-  {
-    scoped_ptr<skia::PlatformCanvas> canvas(
-        RenderProcess::current()->GetDrawingCanvas(&transport_dib,
-                                                   gfx::Rect(canvas_size)));
-    if (!canvas)
-      return false;
-
-    // TODO(trchen): Cleanup the device scale factor mess.
-    // device scale will be applied in WebKit
-    // --> zoom_rect doesn't include device scale,
-    //     but WebKit will still draw on zoom_rect * device_scale_factor_
-    canvas->scale(new_total_scale / device_scale_factor_,
-                  new_total_scale / device_scale_factor_);
-    canvas->translate(-zoom_rect.x() * device_scale_factor_,
-                      -zoom_rect.y() * device_scale_factor_);
-
-    webwidget_->paint(
-        canvas.get(),
-        zoom_rect,
-        WebWidget::ForceSoftwareRenderingAndIgnoreGPUResidentContent);
-  }
-
-  gfx::Rect physical_window_zoom_rect = gfx::ToEnclosingRect(
-      ClientRectToPhysicalWindowRect(gfx::RectF(zoom_rect)));
-  Send(new ViewHostMsg_ShowDisambiguationPopup(routing_id_,
-                                               physical_window_zoom_rect,
-                                               canvas_size,
-                                               transport_dib->id()));
+  TapMultipleTargetsStrategy multitarget_strategy =
+    renderer_preferences_.tap_multiple_targets_strategy;
+  if (multitarget_strategy == TAP_MULTIPLE_TARGETS_STRATEGY_ZOOM) {
+      return webview()->zoomToMultipleTargetsRect(zoom_rect);
+  } else if (multitarget_strategy == TAP_MULTIPLE_TARGETS_STRATEGY_POPUP) {
+      gfx::Size canvas_size =
+          gfx::ToCeiledSize(gfx::ScaleSize(zoom_rect.size(), new_total_scale));
+      TransportDIB* transport_dib = NULL;
+      {
+        scoped_ptr<skia::PlatformCanvas> canvas(
+            RenderProcess::current()->GetDrawingCanvas(&transport_dib,
+                                                       gfx::Rect(canvas_size)));
+        if (!canvas)
+          return false;
+
+        // TODO(trchen): Cleanup the device scale factor mess.
+        // device scale will be applied in WebKit
+        // --> zoom_rect doesn't include device scale,
+        //     but WebKit will still draw on zoom_rect * device_scale_factor_
+        canvas->scale(new_total_scale / device_scale_factor_,
+                      new_total_scale / device_scale_factor_);
+        canvas->translate(-zoom_rect.x() * device_scale_factor_,
+                          -zoom_rect.y() * device_scale_factor_);
+
+        webwidget_->paint(
+            canvas.get(),
+            zoom_rect,
+            WebWidget::ForceSoftwareRenderingAndIgnoreGPUResidentContent);
+      }
+
+      gfx::Rect physical_window_zoom_rect = gfx::ToEnclosingRect(
+          ClientRectToPhysicalWindowRect(gfx::RectF(zoom_rect)));
+      Send(new ViewHostMsg_ShowDisambiguationPopup(routing_id_,
+                                                   physical_window_zoom_rect,
+                                                   canvas_size,
+                                                   transport_dib->id()));
+  } else {
+    return false;
+  }
 
   return true;
 }