Enable webaudio unit tests iff ENABLE(WEB_AUDIO).

R=tkent
BUG=

Review URL: https://codereview.chromium.org/1470873002

Cr-Commit-Position: refs/heads/master@{#361171}

third_party/WebKit/Source/modules/webaudio/AudioBasicProcessorHandlerTest.cpp

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "config.h"
+#if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/AudioBasicProcessorHandler.h"
 
 #include "core/testing/DummyPageHolder.h"
@@ -52,3 +53,5 @@ TEST(AudioBasicProcessorHandlerTest, ProcessorFinalization)
 }
 
 } // namespace blink
+
+#endif // ENABLE(WEB_AUDIO)

third_party/WebKit/Source/modules/webaudio/ConvolverNodeTest.cpp

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "config.h"
+#if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/ConvolverNode.h"
 
 #include "core/testing/DummyPageHolder.h"
@@ -27,3 +28,5 @@ TEST(ConvolverNodeTest, ReverbLifetime)
 }
 
 } // namespace blink
+
+#endif // ENABLE(WEB_AUDIO)

third_party/WebKit/Source/modules/webaudio/DynamicsCompressorNodeTest.cpp

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "config.h"
+#if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/DynamicsCompressorNode.h"
 
 #include "core/testing/DummyPageHolder.h"
@@ -27,3 +28,5 @@ TEST(DynamicsCompressorNodeTest, ProcessorLifetime)
 }
 
 } // namespace blink
+
+#endif // ENABLE(WEB_AUDIO)

third_party/WebKit/Source/modules/webaudio/ScriptProcessorNodeTest.cpp

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "config.h"
+#if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/ScriptProcessorNode.h"
 
 #include "core/testing/DummyPageHolder.h"
@@ -28,3 +29,5 @@ TEST(ScriptProcessorNodeTest, BufferLifetime)
 }
 
 } // namespace blink
+
+#endif // ENABLE(WEB_AUDIO)

third_party/WebKit/Source/modules/webaudio/StereoPannerNodeTest.cpp

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "config.h"
+#if ENABLE(WEB_AUDIO)
 #include "modules/webaudio/StereoPannerNode.h"
 
 #include "core/testing/DummyPageHolder.h"
@@ -26,3 +27,5 @@ TEST(StereoPannerNodeTest, StereoPannerLifetime)
 }
 
 } // namespace blink
+
+#endif // ENABLE(WEB_AUDIO)