Revert of DevTools: support resolving a UILocation to multiple raw script locations

third_party/WebKit/Source/devtools/front_end/bindings/BreakpointManager.js

Index: third_party/WebKit/Source/devtools/front_end/bindings/BreakpointManager.js
diff --git a/third_party/WebKit/Source/devtools/front_end/bindings/BreakpointManager.js b/third_party/WebKit/Source/devtools/front_end/bindings/BreakpointManager.js
index 5ab6e7770ff63d94bd37d6390d556da320e9e163..88df8c07de7cbb1c99df450002bbcead19cc7d72 100644
--- a/third_party/WebKit/Source/devtools/front_end/bindings/BreakpointManager.js
+++ b/third_party/WebKit/Source/devtools/front_end/bindings/BreakpointManager.js
@@ -266,15 +266,13 @@
    * @return {!Promise<!Array<!Workspace.UILocation>>}
    */
   possibleBreakpoints(uiSourceCode, textRange) {
-    var startLocations = Bindings.debuggerWorkspaceBinding.uiLocationToRawLocations(
+    var startLocation = Bindings.debuggerWorkspaceBinding.uiLocationToRawLocation(
         uiSourceCode, textRange.startLine, textRange.startColumn);
-    var endLocations = Bindings.debuggerWorkspaceBinding.uiLocationToRawLocations(
-        uiSourceCode, textRange.endLine, textRange.endColumn);
-    var startLocationsByScript = new Map(startLocations.map(location => [location.script(), location]));
-    var endLocation = endLocations.find(location => location.script() && startLocationsByScript.get(location.script()));
-    if (!endLocation)
+    var endLocation =
+        Bindings.debuggerWorkspaceBinding.uiLocationToRawLocation(uiSourceCode, textRange.endLine, textRange.endColumn);
+    if (!startLocation || !endLocation || startLocation.debuggerModel !== endLocation.debuggerModel)
       return Promise.resolve([]);
-    var startLocation = startLocationsByScript.get(endLocation.script());
+
     return startLocation.debuggerModel
         .getPossibleBreakpoints(startLocation, endLocation, /* restrictToFunction */ false)
         .then(toUILocations.bind(this));
@@ -811,7 +809,7 @@
     var condition = this._breakpoint.condition();
 
     var debuggerLocation = uiSourceCode &&
-        Bindings.debuggerWorkspaceBinding.uiLocationToRawLocations(uiSourceCode, lineNumber, columnNumber)[0];
+        Bindings.debuggerWorkspaceBinding.uiLocationToRawLocation(uiSourceCode, lineNumber, columnNumber);
     var newState;
     if (this._breakpoint._isRemoved || !this._breakpoint.enabled() || this._scriptDiverged()) {
       newState = null;