Plumb gesture source value through Blink.

third_party/WebKit/Source/web/tests/VisualViewportTest.cpp

 // Copyright 2014 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 "config.h"
 
 #include "core/frame/VisualViewport.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameHost.h"
@@ skipping 1594 matching lines @@
         0);
 
     EXPECT_POINT_EQ(FloatPoint(300, 200), visualViewport.location());
 
     // Send a scroll event on the main thread path.
     PlatformGestureEvent gsu(
         PlatformEvent::GestureScrollUpdate,
         IntPoint(0, 0),
         IntPoint(0, 0),
         IntSize(5, 5),
-        0, PlatformEvent::NoModifiers);
+        0, PlatformEvent::NoModifiers, PlatformGestureSourceUninitialized);

[tdresser, 2015/10/14 15:14:20]

I'd like us to be able to assert throughout the codebase that this is never
uninitialized, so let's not use uninitialized in tests.

[wjmaclean, 2015/10/14 15:55:09]

Done.

     gsu.setScrollGestureData(-50, -60, 1, 1, false, false, -1 /* null plugin id */);
 
     frame()->eventHandler().handleGestureEvent(gsu);
 
     // The scroll sent from the impl-side must not be overwritten.
     EXPECT_POINT_EQ(FloatPoint(350, 260), visualViewport.location());
 }
 
 static void accessibilitySettings(WebSettings* settings)
 {
@@ skipping 105 matching lines @@
 TEST_P(ParameterizedVisualViewportTest, PinchZoomGestureScrollsVisualViewportOnly)
 {
     initializeWithDesktopSettings(turnOnInvertedScrollOrder);
     webViewImpl()->resize(IntSize(100, 100));
 
     registerMockedHttpURLLoad("200-by-800-viewport.html");
     navigateTo(m_baseURL + "200-by-800-viewport.html");
 
     WebGestureEvent pinchUpdate;
     pinchUpdate.type = WebInputEvent::GesturePinchUpdate;
+    pinchUpdate.sourceDevice = WebGestureDeviceTouchpad;
     pinchUpdate.x = 100;
     pinchUpdate.y = 100;
     pinchUpdate.data.pinchUpdate.scale = 2;
     pinchUpdate.data.pinchUpdate.zoomDisabled = false;
 
     webViewImpl()->handleInputEvent(pinchUpdate);
 
     VisualViewport& visualViewport = webViewImpl()->page()->frameHost().visualViewport();
     FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
 
     EXPECT_FLOAT_POINT_EQ(FloatPoint(50, 50), visualViewport.location());
     EXPECT_FLOAT_POINT_EQ(FloatPoint(0, 0), frameView.scrollPositionDouble());
 }
 
 } // namespace